Conveyer



H. H. BARBER Feb. 23, 1932.

CONVEYER Filed Sept. 28, 1928 Patented Feb. 23, 1932 HARRY H. BARBER, OFAURORA,

PATENT OFFICE ILLINOIS, ASSIGNOR TO-IBARBER-GREENE COMPANY,

A CORPORATION OF ILLINOIS COHVEYEB Application filed September 88, 1828.BeriaLHo. 809,011.

This invention relates to a conveyer of the portable type which isadapted to move forwardly into its work for elevating material and whichgenerally involves a truck having a pair of rear wheels and a forwardswivelled caster. In the use of such a conveyer, the nose of the boomusually rests upon or in the pile of material bein elevated, and as theconveyer is advance and its nose is pushed into the pile of material, itfrequently happens that the truck tilts and the caster is raised abovethe ground. This is objectionable. Further, when working in soft ground,the nose of the boom usually digs into the earth,

a condition which is also objectionable.

It is an object of this invention to overcome the above noted objectionsin the pro- 50 justableand located at the forward end of the truck forsupporting the forward end of the boom so that its nose will bemaintained at a predetermined elevation.

The invention comprises the novel structure and combination of partshereinafter described and more. particularly pointed out and defined inthe appended claims.

In the accompanying drawings which.

illustrate a preferred embodiment of this so invention and in numeralsrefer to similar features in the different views:

Figure 1 is a broken side elevational view of a conveyer involving thisinvention.

Figure 2 is a transverse sectional view taken upon the line 11-11 ofFigure 1, lookin in the direction of-the arrows.

n the drawings there is shown a conveyer consisting of a truck supportedupon a pair of rear wheels 1 and a forward caster 2 which is usuallymounted to swivel. The truck supports the usual framework for theeonveyer', which includes a pair of upright members 3, the 11 per partof which is shown in broken-0d ation. A sheave 4 at the up er end ofeach upright support has a ca le 5 trained thereover for supporting,elevatin and lows g a conveyer boom 6 as is w known in the art.

59 The forward end of the boom 6 is pivot able mec 'anism has beenvision of mechanism which is preferably adwhich similar reference.

ally connected by radius rods 7 to the front part of the truck. When theboom is sufliciently elevated so that the thrust of the radius rods islargely in a downward direction, such thrust will prevent thecaster orfront end of the truck from tilting upward when the nose of the boom isadvanced into a pile of material. However, when the boom is operated ata shallow inclination, so that the thrust of the radius rods is in anupward direction, or in a substantially horizontal direction, or evenslightly downward, there is a tendency for the caster 2 and the forwardend of the boom to rise or tilt upwardly. To overcome this upward tilt,adjustprovided for supporting the forward end of the boom with its nosein a predetermined relation with the ground. The illustrated form ofthis mechanism will now be set forth.

A pair of angle bars 8 are attached at their upper ends to the uprights3 and at their lower ends they are attached to gusset angles 9 on theframe of the truck. Each angle bar 8 supports a notched plate or member10. The notches in the two plates register for the reception of atransverse bar or member 11 u on which the forward endof the conveyercom is designed to rest when the same is in its lowered operativeposition. The vertical range of the notches is such that the transversebar 11 can be raised or lowered to support the forward end of the boomin any ordinary adjustment. If desirable, the angle supports 8 may bebraced by braces 12 attached to the upri hts 3.

According to this invention, t e boom is adapted to be lowered tosubstantially the desired inclination. The transverse bar 11 is theninserted in the first pair of notches under the boom.- The boom may thenbe slightly lowered until it rests upon 'the bar 11. 7

It will be obvious that the bar 11 will supportthe boom with its nose ina redetermined relation with the ground an that as the nose thereof isforced into the pile of material, the thrust will be transmitted thruthe bar 11 to the forward end of the truck and prevent any upwardtilting thereof. W

' 1. In a conveyer, a truck having an uprightmast, a boom, cable meansfor supporting said boom upon said mast, means for operating said cablefor raising and lowering said boom, a radius rod connecting the forwardpart of said boom and truck, a pair of upwardly extending supports uponthe forward art of supports for supporting the forward end of said boomin its operative position.

2. In a conveyer, a truck, said truck having an upright mast, a boom,cable means for supporting said boom upon said mast, means for operatingsaid cable for bodily elevating and lowering said boom, a radius rodconnecti'ng'the forward end of said boom and truck, upwardl extendingsupports upon the forward en of said truck, said supports havingvertically spaced rod engaging seats said truck, one upon each side ofsai boom,- and a rod vertically adjustable upon said neaaeae saidvehicle when said boom is advanced into a pile of material. 6. Thecombination with a vehicle, of a boom, means for supporting the boomupon said vehicle for elevating and lowering movements, radius rodspivotally connectln the forward portion of said boom and vei icle,upwardly extending supports u on said vehicle and a transverse'member adtained upon said supports for engaging said boom and arresting upwardtilting movement of the front part of said vehicle when saiii boom isadvanced into a pile of materla 7. in a portable conveyer comprising avehicl e, a boom suported upon said vehicle, radius rods pivota lyconnecting said vehicle with the forward portion of said boom and meanson said vehicle below said boom and engageable therewith for arrestingupward tilting movement of said vehicle when the nose of the boom isadvanced into a pile of material.

In testimony whereof I have hereunto subscribed my name at Aurora, KaneCounty,

Illinois.

- H. BARBER.

and a rod vertically adjustable with'respect to said seats forsupporting the forward end of said boom in its operative position.

3. In a conveyer, a truck including an uprightmast, a boom, cable meansupon said mast for supporting said boom, means for operating said cablefor raising and lowering said boom, and an auxiliary supportin meansmeans upon the forwar part of sai truck includin a vertically adjustablerod for engaging t e boom an preventing upnose of the boom is advancedinto a pile of raising and lower the boom, radius rods pivcl otallyconnecting the forward portion of said boom and vehicle, and means.including a transversely extending element upon said vehicle and locatedbetween said boom and vshicle and engaging said boom for arrestingupward tilting movement of the front end of ward tilting movement ofsaid truck when the justably sus-

